Tag: #excessivecurrent
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EK Electrical Oct 2020 (Q9)
With reference to the protective devices fitted to a main alternating current generator, explain EACH of the following (a) Overcurrent and short circuit protection (2) (b) Generator negative phases sequence (2) (c) Loss of field (Excitation) (2) (d) Under voltage (2) (e) Reverse power (2) Oct 2020 (Q9)
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EK Electrical Jul 2020 (Q11)
With reference to electrical system protective devices, explain the purpose of EACH of the following: (a) Overcurrent protection; (2) (b) Short circuit protection; (2) (c) No-volt protection; (2) (d) Reverse power protection; (2) (e) Preferential tripping. (2) Jul 2020 (Q11)
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EK Electrical Jul 2019 (Q10)
With reference to three phase induction motor starters (a) Explain why star-delta starters are employed (2) (b) Explain what is meant by reduced voltage starting in context with star-delta starting (2) (c) Explain, with the aid of power circuit, the sequence of star-delta. (6) AC Starters Jul 2019 (Q10)
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EK Electrical Dec 2017 (Q9)
With reference to overcurrent protection: (a) Explain THREE methods of protection, stating where each may be used. (6) (b) Explain with the aid of a diagram the meaning of inverse current time characteristics. (4) Electrical safety Dec 2017 (Q9)
UKM Tuticorin 